void set_big_cap_corr(void) {
uint8_t key_pressed;
int8_t korr;
// set the contrast value
message_key_released(SetCapCorr_str); // display Capacity correction and wait for key released
korr = eeprom_read_byte((uint8_t *)&big_cap_corr);
#ifdef POWER_OFF
uint8_t times;
for (times=0;times<240;)
#else
while (1) /* wait endless without option POWER_OFF */
#endif
{
lcd_line2();
if (korr < 0) {
lcd_data('-');
DisplayValue16(-korr,-1,'%',3);
} else {
DisplayValue16(korr,-1,'%',3);
}
lcd_clear_line(); // clear to end of line
key_pressed = wait_for_key_ms(1600);
#ifdef POWER_OFF
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed != 0) || (rotary.incre > 0)) times = 0; // reset counter, operator is active
#else
if (key_pressed != 0) times = 0; // reset counter, operator is active
#endif
#endif
if(key_pressed >= 130) break; // more than 1.3 seconds
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre > FAST_ROTATION) break; // fast rotation ends setting of korr
korr += rotary.count; // increase or decrease the korr by rotary.count
#endif
if (key_pressed > 0) {
if (key_pressed > 40) {
korr++; // longer key press select higher korr value
} else {
korr--; // decrease the korr
}
}
if (korr > MAX_KORR) korr -= (MAX_KORR - MIN_KORR + 1);
if (korr < MIN_KORR) korr += (MAX_KORR - MIN_KORR + 1);
#ifdef POWER_OFF
times = Pwr_mode_check(times); // no time limit with DC_Pwr_mode
#endif
} /* end for times */
eeprom_write_byte((uint8_t *)(&big_cap_corr), (int8_t)korr); // save korr value
}
void set_contrast(void) {
uint8_t key_pressed;
uint8_t contrast;
// set the contrast value
message_key_released(CONTRAST_str); // display Contrast and wait for key released
contrast = eeprom_read_byte(&EE_Volume_Value);
#ifdef POWER_OFF
uint8_t times;
for (times=0;times<240;times++)
#else
while (1) /* wait endless without option POWER_OFF */
#endif
{
lcd_command(CMD_SET_VOLUME_FIRST); // 0x81 set volume command
lcd_command(contrast); // value from 1 to 63 (0x3f) */
lcd_line2();
lcd_clear_line();
lcd_line2();
DisplayValue(contrast,0,' ',4);
key_pressed = wait_for_key_ms(1600);
#ifdef POWER_OFF
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed != 0) || (rotary.incre > 0)) times = 0; // reset counter, operator is active
#else
if (key_pressed != 0) times = 0; // reset counter, operator is active
#endif
#endif
if(key_pressed >= 130) break; // more than 1.3 seconds
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre > FAST_ROTATION) break; // fast rotation ends setting of contrast
if (rotary.count >= 0) {
contrast += rotary.count; // increase the contrast by rotary.count
} else {
contrast += (MAX_CONTRAST + 1 + rotary.count); // decrease the contrast by rotary.count
}
#endif
if (key_pressed > 0) {
if (key_pressed > 40) {
contrast++; // longer key press select higher contrast value
} else {
contrast += MAX_CONTRAST; // decrease the contrast
}
}
contrast &= MAX_CONTRAST;
} /* end for times */
eeprom_write_byte((uint8_t *)(&EE_Volume_Value), (int8_t)contrast); // save contrast value
}
void show_Resis13(void) {
uint8_t key_pressed;
message_key_released(RESIS_13_str); // "1-|=|-3 .."
#ifndef RMETER_WITH_L
lcd_set_cursor(0,6);
lcd_MEM_string(RL_METER_str); // " [R]" or "[RL]"
#endif
#ifdef POWER_OFF
uint8_t times;
for (times=0;times<250;)
#else
while (1) /* wait endless without the POWER_OFF option */
#endif
{
init_parts(); // set all parts to nothing found
GetResistance(TP3, TP1);
GetResistance(TP1, TP3);
lcd_line1(); // lcd_set_cursor(0,0);
if (ResistorsFound != 0) {
show_resis(TP1,TP3,1);
} else { /* no resistor found */
#ifdef RMETER_WITH_L
lcd_MEM_string(RESIS_13_str);
lcd_MEM_string(RL_METER_str+4); // " [R]" or "[RL]"
#endif
lcd_line2();
lcd_data('?'); // too big
#if LCD_LINES>2
lcd_next_line(0);
#endif
lcd_clear_line();
}
#if defined(POWER_OFF) && defined(BAT_CHECK)
Bat_update(times);
#endif
key_pressed = wait_for_key_ms(1000);
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed != 0) || (rotary.incre > 3)) break;
#else
if (key_pressed != 0) break;
#endif
#if defined(POWER_OFF)
times = Pwr_mode_check(times); // no time limit with DC_Pwr_mode
#endif
} /* end for times */
lcd_clear();
} /* end show_Resis13() */
/* ****************************************************************** */
void show_C_ESR() {
uint8_t key_pressed;
message_key_released(C_ESR_str);
#ifdef POWER_OFF
uint8_t times;
for (times=0;times<250;times++)
#else
while (1) /* wait endless without the POWER_OFF option */
#endif
{
PartFound = PART_NONE;
ReadBigCap(TP3,TP1);
if (PartFound == PART_CAPACITOR) {
lcd_line1(); // clear old capacity value
lcd_clear_line();
lcd_line1();
lcd_data('C');
lcd_data('=');
DisplayValue(cap.cval_max,cap.cpre_max,'F',3);
cap.esr = GetESR(cap.cb,cap.ca);
lcd_line2(); // clear old ESR value
lcd_clear_line();
lcd_line2();
lcd_MEM_string(&ESR_str[1]);
if (cap.esr < 65530) {
DisplayValue(cap.esr,-2,LCD_CHAR_OMEGA,2);
} else {
lcd_data('?'); // too big
}
} else {
lcd_clear();
lcd_MEM2_string(C_ESR_str);
}
key_pressed = wait_for_key_ms(1000);
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed != 0) || (rotary.incre > 3)) break;
#else
if (key_pressed != 0) break;
#endif
} /* end for times */
} /* end show_C_ESR() */
/* ****************************************************************** */
void function_menu() {
uint8_t ii;
uint8_t func_number;
#ifdef PAGE_MODE
uint8_t page_nr;
uint8_t p_nr;
uint8_t ff;
page_nr = MODE_LAST;
#ifdef WITH_ROTARY_SWITCH
rotary.count = 0;
#endif
#endif
func_number = 0;
#ifdef POWER_OFF
uint8_t ll;
for (ll=0;ll<((MODE_LAST+1)*10);ll++)
#else
while (1) /* without end, if no power off specified */
#endif
{
if (func_number > MODE_LAST) func_number -= (MODE_LAST + 1);
message_key_released(SELECTION_str);
#ifdef FOUR_LINE_LCD
#ifdef PAGE_MODE
ff = 0;
if (func_number == page_nr) ff = 1; // number is found
p_nr = page_nr + 1;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
if (func_number == p_nr) ff = 1; // number is found
p_nr = page_nr + 2;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
if (func_number == p_nr) ff = 1; // number is found
if (ff == 0) {
// func_number is not in page list
#ifdef WITH_ROTARY_SWITCH
if (rotary.count >= 0) {
page_nr = (func_number + MODE_LAST -1); // page_nr = func_number - 2
} else {
page_nr = func_number; // for backward, set page_nr to func_number
}
if (page_nr > MODE_LAST) page_nr -= (MODE_LAST + 1);
#else
page_nr = func_number;
#endif
}
if (ff == 0) {
lcd_line2();
lcd_clear_line(); // clear line 2
}
lcd_line2(); // reset cursor to begin of line 2
if (func_number == page_nr) {
lcd_data('>');
} else {
lcd_space(); // put a blank to 1. row of line 2
}
message2line(page_nr); // show first page function
if (ff == 0) {
lcd_line3();
lcd_clear_line(); // clear line 3
}
lcd_line3(); // reset cursor to begin of line 3
p_nr = page_nr + 1;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
if (func_number == p_nr) {
lcd_data('>');
} else {
lcd_space(); // put a blank to 1. row of line 3
}
message2line(p_nr); // show 2. page function
if (ff == 0) {
lcd_line4();
lcd_clear_line(); // clear line 4
}
lcd_line4(); // reset cursor to begin of line 4
p_nr = page_nr + 2;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
if (func_number == p_nr) {
lcd_data('>');
} else {
lcd_space(); // put a blank to 1. row of line 4
}
message2line(p_nr); // show 3. page function
#else /* no PAGE_MODE */
lcd_line2();
lcd_clear_line(); // clear line 2
lcd_line2(); // reset cursor to begin of line 2
lcd_space(); // put a blank to 1. row of line 2
message2line(func_number + MODE_LAST); // show lower (previous) function
lcd_line3();
lcd_clear_line(); // clear line 3
lcd_line3(); // reset cursor to begin of line 3
lcd_data('>'); // put a '>' marker to row 1 of line 3
message2line(func_number); // show selectable function
lcd_line4();
lcd_clear_line(); // clear line 4
lcd_line4(); // reset cursor to begin of line 4
lcd_space(); // put a blank to 1. row of line 4
message2line(func_number + 1); // show higher (next) function
#endif /* PAGE_MODE */
#else /* no FOUR_LINE_LCD */
lcd_line2();
lcd_clear_line(); // clear line 2
lcd_line2(); // reset cursor to begin of line 2
message2line(func_number);
#endif /* FOUR_LINE_LCD */
#ifdef POWER_OFF
ii = wait_for_key_ms(SHORT_WAIT_TIME); // wait about 5 seconds
if (ii > 0) ll = 0; // reset timer, operator present
#else
ii = wait_for_key_ms(0); // wait endless
#endif
#ifdef WITH_ROTARY_SWITCH
if ((ii >= MIN_SELECT_TIME) || ((rotary_switch_present != 0) && (ii > 0)))
#else
if (ii >= MIN_SELECT_TIME)
#endif
{
// selection only with key-press
if (func_number == MODE_TRANS) break; // return to TransistorTester
if (func_number == MODE_FREQ) GetFrequency(0);
#if PROCESSOR_TYP == 644
if (func_number == MODE_HFREQ) GetFrequency(1); // measure high frequency with 16:1 divider
if (func_number == MODE_H_CRYSTAL) GetFrequency(5); // HF crystal input + 16:1 divider
if (func_number == MODE_L_CRYSTAL) GetFrequency(6); // LF crystal input, 1:1 divider
#endif
if (func_number == MODE_FGEN) {
make_frequency(); // make some sample frequencies
}
if (func_number == MODE_PWM) {
do_10bit_PWM(); // generate 10bit PWM
}
if (func_number == MODE_ESR) {
show_C_ESR(); // measure capacity and ESR at TP1 and TP3
}
if (func_number == MODE_ROTARY) {
CheckRotaryEncoder(); // check rotary encoder
}
#ifdef WITH_SELFTEST
if (func_number == MODE_SELFTEST) AutoCheck(0x11); // Full selftest with calibration
#endif
if (func_number == MODE_VEXT) show_vext();
#if (LCD_ST_TYPE == 7565)
if (func_number == MODE_CONTRAST) set_contrast();
#endif
if (func_number == MODE_SHOW) {
ShowData(); // Show Calibration Data
}
if (func_number == MODE_OFF) {
ON_PORT &= ~(1<<ON_PIN); //switch off power
wait_for_key_ms(0); //never ending loop
}
// don't increase function number for easier selection the same function
ii = 0; // function was executed before, do not increase func_number
#ifdef WITH_ROTARY_SWITCH
rotary.incre = 0; // reset all rotary information
rotary.count = 0;
#endif
} /* end if (ii >= MIN_SELECT_TIME) */
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre >= FAST_ROTATION) break; // to much rotation
#ifdef POWER_OFF
if (rotary.count != 0) ll = 0; // someone is working, reset timer
#endif
if (rotary.count >= 0) {
func_number += rotary.count; // function number is increased by rotary steps
} else {
func_number += (MODE_LAST + 1 + rotary.count); // function is decreased by rotary steps
}
#endif
if (ii > 0) func_number++; // increase the function number with key press
} /* end for ll */
return;
} // end function_menu()
/* *************************************************** */
void do_10bit_PWM() {
uint8_t key_pressed;
uint8_t percent; // requestet duty-cycle in %
uint8_t old_perc; // old duty-cycle in %
unsigned int pwm_flip; // value for counter to flip the state
message_key_released(PWM_10bit_str); // display PWM-Generator and wait for key released
// OC1B is connected with 680 Ohm resistor to TP2 (middle test pin)
TCCR1A = (1<<COM1B1) | (0<<COM1B0) | (1<<WGM11) | (1<<WGM10); // fast PWM mode, count to 10 bit
TIMSK1 = 0; // no interrupt used
OCR1A = 1; // highest frequency
OCR1B = 0xff; // toggle OC1B at this count
TIFR1 = (1<<OCF1A) | (1<<OCF1A) | (1<<TOV1); // reset interrupt flags
TCCR1C = 0;
R_PORT = 0; // set all resistor port outputs to GND
#if PROCESSOR_TYP == 644
R_DDR = (1<<PIN_RL1) | (1<<PIN_RL2) | (1<<PIN_RL3); // set TP1, DDD4(TP2) and TP3 to output
#else
R_DDR = (1<<PIN_RL1) | (1<<PIN_RL3); // set TP1 and TP3 to output
#endif
ADC_PORT = TXD_VAL;
ADC_DDR = (1<<TP1) | TXD_MSK; //connect TP1 to GND
DDRB |= (1<<DDB2); // set output enable
TCCR1B = (0<<WGM13) | (1<<WGM12) | (0<<CS12) | (0<<CS11) | (1<<CS10); // no clock divide
key_pressed = 0;
old_perc = 0;
percent = 10;
#ifdef POWER_OFF
uint8_t times; // time limit
for (times=0; times<240; times++)
#else
while (1) /* wait endless without option POWER_OFF */
#endif
{
if (percent != old_perc) {
// new duty cycle is requested
if (percent >= 100) {
percent -= 100; //reset to 0 percent or higher
}
pwm_flip = (((unsigned long)0x3ff * percent) + 50) / 100;
OCR1B = pwm_flip; // new percentage
lcd_line2(); // set cursor to begin of line 2
lcd_clear_line(); // clear line 2
lcd_line2(); // set cursor to row 1 of line 2
DisplayValue((((unsigned long)pwm_flip * 1000) + 0x1ff) / 0x3ff,-1,'%',5);
#if 0
lcd_space();
if (rotary.count >= 0) { // actual count for debugging
lcd_data('+');
lcd_data('0'+rotary.count);
} else {
lcd_data('-');
lcd_data('0'-rotary.count);
}
lcd_line3();
uint8_t kk;
kk = (rotary.ind + 1) & ROT_MSK;
do {
lcd_data('0'+rotary.state[kk]); // debugging output of rotary state
kk = (kk + 1) & ROT_MSK;
} while (kk != rotary.ind);
#endif
old_perc = percent; // update the old duty cycle
if (key_pressed > 40) {
wait_about300ms(); // wait some time to release the button
}
} /* end if percent != old_perc */
key_pressed = wait_for_key_ms(1600);
if(key_pressed > 130) break; // more than 1.3 seconds
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre > FAST_ROTATION) break; // fast rotation ends voltage measurement
if (rotary.count >= 0) {
percent += rotary.count; // increase the duty cycle by rotary.count
} else {
percent += (100 + rotary.count); // decrease the duty cycle by rotary.count
}
#endif
if (key_pressed > 50) {
percent += 10; // duty cycle will be increased with 10
} else {
if (key_pressed > 0) percent += 1; // duty cycle will be increased with 1
}
#ifdef POWER_OFF
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed > 0) || (rotary.incre > 0)) times = 0; // reset the loop counter, operator is active
#else
if (key_pressed > 0) times = 0; //reset the loop counter, operator is active
#endif
#endif
} /* end for times */
ADC_DDR = TXD_MSK; // disconnect TP1
TCCR1B = 0; // stop counter
TCCR1A = 0; // stop counter
R_DDR = 0; // switch resistor ports to Input
DDRB &= ~(1<<DDB2); // disable output
} /* end do_10bit_PWM */
/* *************************************************** */
void make_frequency() {
#define MAX_FREQ_NR 19
uint8_t key_pressed;
uint8_t freq_nr;
uint8_t old_freq;
message_key_released(F_GEN_str); // display f-Generator and wait for key released
// OC1B is connected with 680 Ohm resistor to TP2 (middle test pin)
TCCR1A = (0<<COM1B1) | (1<<COM1B0) | (0<<WGM11) | (0<<WGM10); // CTC mode, count to OCR1A
TIMSK1 = 0; // no interrupt used
OCR1A = 1; // highest frequency
OCR1B = 0; // toggle OC1B at this count
TIFR1 = (1<<OCF1A) | (1<<OCF1A) | (1<<TOV1); // reset interrupt flags
TCCR1C = 0;
TCCR1B = (0<<WGM13) | (1<<WGM12) | (0<<CS12) | (0<<CS11) | (0<<CS10); // set counter mode
R_PORT = 0; // set all resistor port outputs to GND
#if PROCESSOR_TYP == 644
R_DDR = (1<<PIN_RL1) | (1<<PIN_RL2) | (1<<PIN_RL3); // set TP1, DDD4(TP2) and TP3 to output
#else
R_DDR = (1<<PIN_RL1) | (1<<PIN_RL3); // set TP1 and TP3 to output
#endif
ADC_PORT = TXD_VAL;
ADC_DDR = (1<<TP1) | TXD_MSK; //connect TP1 to GND
DDRB |= (1<<DDB2); // set output enable
TCCR1B = (0<<WGM13) | (1<<WGM12) | (0<<CS12) | (0<<CS11) | (1<<CS10); // no clock divide
old_freq = 0;
freq_nr = MAX_FREQ_NR - 1; // start with 1 MHz
#ifdef POWER_OFF
uint8_t new_points; // one point for every 30 seconds wait time
uint8_t shown_points; // one point for every 30 seconds wait time
uint8_t times; // total wait time
shown_points = 0;
for (times=0; times<240; times++)
#else
while (1) /* wait endless without option POWER_OFF */
#endif
{
#define KEYPRESS_LENGTH_10ms 0
#ifdef POWER_OFF
new_points = (times+10) / 30;
if (new_points != shown_points) {
// count of points has changed, build LCD line1 new
lcd_line1();
lcd_clear_line(); // clear line 1
lcd_line1();
lcd_MEM2_string(F_GEN_str); // display f-Generator
shown_points = new_points;
for (new_points=0; new_points<shown_points ;new_points++) {
lcd_data('.'); // show elapsed time, one point is 30 seconds
}
}
#undef KEYPRESS_LENGTH_10ms
#define KEYPRESS_LENGTH_10ms 20 /* change frequency only with >200ms key press */
#endif
if (old_freq != freq_nr) {
// new frequency is selected
if (freq_nr > MAX_FREQ_NR) freq_nr -= (MAX_FREQ_NR + 1);
old_freq = freq_nr; // update the last active frequency number
#ifdef FOUR_LINE_LCD
lcd_line2();
lcd_clear_line(); // clear line 2 for previous frequency
lcd_line2();
lcd_space(); // add a space to row 1 of line2
switch_frequency(freq_nr + MAX_FREQ_NR);
lcd_line4();
lcd_clear_line(); // clear line 4 for next frequency
lcd_line4();
lcd_space(); // add a space to row 1 of line4
switch_frequency(freq_nr + 1);
lcd_line3();
lcd_clear_line(); // clear line 3 for new frequency
lcd_line3();
lcd_data('>');
switch_frequency(freq_nr);
#else
lcd_line2();
lcd_clear_line(); // clear line 2 for next frequency
lcd_line2();
switch_frequency(freq_nr);
#endif
} /* end if (old_freq != freq_nr) */
key_pressed = wait_for_key_ms(1000);
#ifdef POWER_OFF
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed != 0) || (rotary.incre > 0)) times = 0; // reset counter, operator is active
#else
if (key_pressed != 0) times = 0; // reset counter, operator is active
#endif
#endif
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre > FAST_ROTATION) break; // fast rotation ends voltage measurement
if (rotary.count >= 0) {
freq_nr += rotary.count; // increase the frequency number by rotary.count
} else {
freq_nr += (MAX_FREQ_NR + 1 + rotary.count); // decrease the frequency by rotary.count
}
#endif
if (key_pressed > KEYPRESS_LENGTH_10ms) freq_nr++; // longer key press select next frequency
if(key_pressed >= 80) break; // more than 0.8 seconds
} /* end for times */
TCCR1B = 0; // stop counter
TCCR1A = 0; // stop counter
ADC_DDR = TXD_MSK; // disconnect TP1
R_DDR = 0; // switch resistor ports to Input
DDRB &= ~(1<<DDB2); // disable output
} /* end make frequency */
/* *************************************************** */
void show_vext() {
#ifdef WITH_VEXT
uint8_t key_pressed;
uint8_t key_long_pressed;
unsigned int Vext;
// show the external voltage
message_key_released(VOLTAGE_str);
key_long_pressed = 0;
#ifdef POWER_OFF
uint8_t times;
for (times=0;times<240;times++)
#else
while (1) /* wait endless without option POWER_OFF */
#endif
{
#ifdef TPex2
lcd_line1(); // 2 Vext measurements
lcd_clear_line();
lcd_line1();
#else
lcd_line2(); // only one measurement use line 2
lcd_clear_line();
lcd_line2();
#endif /* TPex2 */
#ifdef WITH_UART
uart_newline(); // start of new measurement
uart_newline(); // start of new measurement
#endif
lcd_MEM_string(Vext_str); // Vext=
Vext = W5msReadADC(TPext); // read external voltage
// ADC_DDR = TXD_MSK; //activate Software-UART
#if EXT_NUMERATOR <= (0xffff/U_VCC)
DisplayValue(Vext*EXT_NUMERATOR/EXT_DENOMINATOR,-3,'V',3); // Display 3 Digits of this mV units
#else
DisplayValue((unsigned long)Vext*EXT_NUMERATOR/EXT_DENOMINATOR,-3,'V',3); // Display 3 Digits of this mV units
#endif
#ifdef TPex2
lcd_line2();
lcd_clear_line();
lcd_line2();
#ifdef WITH_UART
uart_newline(); // start of new measurement
#endif
lcd_MEM_string(Vext_str); // Vext=
Vext = W5msReadADC(TPext); // read external voltage
#if EXT_NUMERATOR <= (0xffff/U_VCC)
DisplayValue(Vext*EXT_NUMERATOR/EXT_DENOMINATOR,-3,'V',3); // Display 3 Digits of this mV units
#else
DisplayValue((unsigned long)Vext*EXT_NUMERATOR/EXT_DENOMINATOR,-3,'V',3); // Display 3 Digits of this mV units
#endif
#endif /* TPex2 */
key_pressed = wait_for_key_ms(1000);
#ifdef POWER_OFF
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed > 0) || (rotary.incre > 0)) times = 0; // reset the loop counter, operator is active
if (rotary.incre > 5) break; // fast rotation ends voltage measurement
#else
if (key_pressed > 0) times = 0; //reset the loop counter, operator is active
#endif
#endif
if (key_pressed > ((1000/10)-6)) {
key_long_pressed++; // count the long key press
}
if (key_pressed == 0) key_long_pressed = 0; //reset the key long pressed counter
if (key_long_pressed > 4) break; // five seconds end the loop
} /* end for times */
#endif /* WITH_VEXT */
} /* end show_vext() */
void set_contrast(void) {
uint8_t key_pressed;
uint8_t contrast;
// set the contrast value
message_key_released(CONTRAST_str); // display Contrast and wait for key released
contrast = eeprom_read_byte(&EE_Volume_Value);
#ifdef POWER_OFF
uint8_t times;
for (times=0;times<240;)
#else
while (1) /* wait endless without option POWER_OFF */
#endif
{
#if ((LCD_ST_TYPE == 7565) || (LCD_ST_TYPE == 1306))
lcd_command(CMD_SET_VOLUME_FIRST); // 0x81 set volume command
lcd_command(contrast); // value from 1 to 63 (0x3f) */
#elif (LCD_ST_TYPE == 8812) /* PCF8812 controller */
lcd_command(CMD_SET_EXTENDED_INSTRUCTION); // set extended instruction mode
lcd_command(ECMD_SET_CONTRAST | (contrast & 0x7f)); // set the contrast value
lcd_command(CMD_SET_NORMAL_INSTRUCTION); // return to normal instruction mode
#elif (LCD_ST_TYPE == 8814) /* PCF8814 controller */
lcd_command(CMD_SET_VOP_UPPER | ((contrast >> 5) & 0x07)); // set upper Vop
lcd_command(CMD_SET_VOP_LOWER | (contrast & 0x1f)); // set lower Vop
#else /* DOGM display */
lcd_command(CMD_SetIFOptions | MODE_8BIT | 0x09); // 2-line / IS=1
lcd_command(CMD1_PowerControl | ((contrast>>4)&0x07)); // booster on,off / set contrast C5:C4
lcd_command(CMD1_SetContrast | (contrast&0x0f)); // set contrast C3:0
lcd_command(CMD_SetIFOptions | MODE_8BIT | 0x08); // 2-line / IS=0
#endif
lcd_line2();
DisplayValue16(contrast,0,' ',4);
lcd_clear_line(); // clear to end of line
key_pressed = wait_for_key_ms(1600);
#ifdef POWER_OFF
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed != 0) || (rotary.incre > 0)) times = 0; // reset counter, operator is active
#else
if (key_pressed != 0) times = 0; // reset counter, operator is active
#endif
#endif
if(key_pressed >= 130) break; // more than 1.3 seconds
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre > FAST_ROTATION) break; // fast rotation ends setting of contrast
if (rotary.count >= 0) {
contrast += rotary.count; // increase the contrast by rotary.count
} else {
contrast += (MAX_CONTRAST + 1 + rotary.count); // decrease the contrast by rotary.count
}
#endif
if (key_pressed > 0) {
if (key_pressed > 40) {
contrast++; // longer key press select higher contrast value
} else {
contrast += MAX_CONTRAST; // decrease the contrast
}
}
contrast &= MAX_CONTRAST;
#ifdef POWER_OFF
times = Pwr_mode_check(times); // no time limit with DC_Pwr_mode
#endif
} /* end for times */
eeprom_write_byte((uint8_t *)(&EE_Volume_Value), (int8_t)contrast); // save contrast value
}
/* *************************************************** */
void do_10bit_PWM() {
uint8_t key_pressed;
uint8_t percent; // requestet duty-cycle in %
uint8_t old_perc; // old duty-cycle in %
unsigned int pwm_flip; // value for counter to flip the state
message_key_released(PWM_10bit_str); // display PWM-Generator and wait for key released
// OC1B is connected with 680 Ohm resistor to TP2 (middle test pin)
TCCR1A = (1<<COM1B1) | (0<<COM1B0) | (1<<WGM11) | (1<<WGM10); // fast PWM mode, mode 7: count to 10 bit
TIMSK1 = 0; // no interrupt used
OCR1B = 0xff; // toggle OC1B at this count
TIFR1 = (1<<OCF1A) | (1<<OCF1A) | (1<<TOV1); // reset interrupt flags
TCCR1C = 0;
R_PORT = 0; // set all resistor port outputs to GND
#if PROCESSOR_TYP == 644
R_DDR = (1<<PIN_RL1) | (1<<PIN_RL2) | (1<<PIN_RL3); // set TP1, DDD4(TP2) and TP3 to output
#else
R_DDR = (1<<PIN_RL1) | (1<<PIN_RL3); // set TP1 and TP3 to output
#endif
ADC_PORT = TXD_VAL;
ADC_DDR = (1<<TP1) | TXD_MSK; //connect TP1 to GND
#if PROCESSOR_TYP == 1280
DDRB |= (1<<DDB6); // set output enable for OC1B
#else
DDRB |= (1<<DDB2); // set output enable
#endif
#ifdef PWM_SERVO
TCCR1B = (1<<WGM13) | (1<<WGM12) | SERVO_START; // mode 15, clock divide by 8 or 64
OCR1A = PWM_MAX_COUNT - 1; // clock tics for 20 ms
#else
OCR1A = 1; // highest frequency
TCCR1B = (0<<WGM13) | (1<<WGM12) | (0<<CS12) | (0<<CS11) | (1<<CS10); // mode 7, no clock divide
#endif
key_pressed = 0;
old_perc = 0;
percent = (SERVO_MAX + SERVO_MIN) / 2; // set to middle
#ifdef POWER_OFF
uint8_t times; // time limit
for (times=0; times<240; )
#else
while (1) /* wait endless without option POWER_OFF */
#endif
{
if (percent != old_perc) {
// new duty cycle is requested
if (percent >= SERVO_MAX) {
percent -= (SERVO_MAX - SERVO_MIN); // reset near to mininum value
}
#ifdef PWM_SERVO
pwm_flip = (((unsigned long)PWM_MAX_COUNT * percent) + 500) / 1000;
#else
pwm_flip = (((unsigned long)PWM_MAX_COUNT * percent) + 50) / 100;
#endif
OCR1B = pwm_flip; // new percentage
lcd_line2(); // goto line 2
#ifdef PWM_SERVO
DisplayValue(((unsigned long)pwm_flip * SERVO_DIV)/MHZ_CPU ,-6,'s',3);
lcd_space();
lcd_data('/');
lcd_space();
DisplayValue16(((unsigned long)PWM_MAX_COUNT * SERVO_DIV)/MHZ_CPU, -6,'s',3);
#else
DisplayValue16((((unsigned long)pwm_flip * 1000) + (PWM_MAX_COUNT/2)) / PWM_MAX_COUNT,-1,'%',5);
#endif
lcd_clear_line();
old_perc = percent; // update the old duty cycle
if (key_pressed > 40) {
wait_about300ms(); // wait some time to release the button
}
} /* end if percent != old_perc */
key_pressed = wait_for_key_ms(1600);
if(key_pressed > 130) break; // more than 1.3 seconds
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre > FAST_ROTATION) break; // fast rotation ends voltage measurement
if (rotary.count >= 0) {
percent += rotary.count; // increase the duty cycle by rotary.count
} else {
percent += ((SERVO_MAX-SERVO_MIN) + rotary.count); // decrease the duty cycle by rotary.count
}
#endif
if (key_pressed > 50) {
percent += 10; // duty cycle will be increased with 10
} else {
if (key_pressed > 0) percent += 1; // duty cycle will be increased with 1
}
#ifdef POWER_OFF
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed > 0) || (rotary.incre > 0)) times = 0; // reset the loop counter, operator is active
#else
if (key_pressed > 0) times = 0; //reset the loop counter, operator is active
#endif
#endif
#ifdef POWER_OFF
times = Pwr_mode_check(times); // no time limit with DC_Pwr_mode
#endif
} /* end for times */
ADC_DDR = TXD_MSK; // disconnect TP1
TCCR1B = 0; // stop counter
TCCR1A = 0; // stop counter
R_DDR = 0; // switch resistor ports to Input
#if PROCESSOR_TYP == 1280
DDRB &= ~(1<<DDB6); // disable output
#else
DDRB &= ~(1<<DDB2); // disable output
#endif
} /* end do_10bit_PWM */
/* ****************************************************************** */
void show_C_ESR() {
uint8_t key_pressed;
message_key_released(C_ESR_str);
#ifdef POWER_OFF
uint8_t times;
for (times=0;times<250;)
#else
while (1) /* wait endless without the POWER_OFF option */
#endif
{
PartFound = PART_NONE;
ReadBigCap(TP3,TP1);
if (PartFound == PART_CAPACITOR) {
#if LCD_LINES > 2
lcd_line2(); // set to line2
#else
lcd_line1(); // set to line1
#endif
lcd_data('C');
lcd_equal(); // lcd_data('=');
DisplayValue(cap.cval_max,cap.cpre_max,'F',3);
lcd_clear_line(); // clear to end of line 1
cap.esr = GetESR(cap.cb,cap.ca);
#if LCD_LINES > 2
lcd_line3(); // use line 3
#else
lcd_line2(); // use line 2
#endif
lcd_MEM_string(&ESR_str[1]);
if (cap.esr < 65530) {
DisplayValue16(cap.esr,-2,LCD_CHAR_OMEGA,2);
} else {
lcd_data('?'); // too big
}
lcd_clear_line(); // clear to end of line
} else { // no cap found
#if LCD_LINES > 2
lcd_clear_line2(); // clear C value
lcd_line3();
lcd_clear_line(); // clear old ESR value
#else
lcd_line1(); //
lcd_MEM2_string(C_ESR_str);
lcd_clear_line();
lcd_clear_line2(); // clear old ESR value
#endif
}
#if defined(POWER_OFF) && defined(BAT_CHECK)
Bat_update(times);
#endif
key_pressed = wait_for_key_ms(1000);
#ifdef WITH_ROTARY_SWITCH
if ((key_pressed != 0) || (rotary.incre > 3)) break;
#else
if (key_pressed != 0) break;
#endif
#ifdef POWER_OFF
times = Pwr_mode_check(times); // no time limit with DC_Pwr_mode
#endif
} /* end for times */
} /* end show_C_ESR() */
/* ****************************************************************** */
void function_menu() {
uint8_t ii;
uint8_t func_number;
#ifdef PAGE_MODE
uint8_t page_nr;
uint8_t p_nr;
uint8_t ff;
page_nr = MODE_LAST;
#ifdef WITH_ROTARY_SWITCH
rotary.count = 0;
#endif
#endif
func_number = 0;
message_key_released(SELECTION_str);
#ifdef POWER_OFF
uint8_t ll;
for (ll=0;ll<((MODE_LAST+1)*10);ll++)
#else
while (1) /* without end, if no power off specified */
#endif
{
if (func_number > MODE_LAST) func_number -= (MODE_LAST + 1);
#if (LCD_LINES > 3)
uint8_t mm;
#ifdef PAGE_MODE
ff = 0;
mm = 0;
do {
p_nr = page_nr + mm;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
if (func_number == p_nr) ff = 1; // number is found
} while (++mm < MENU_LINES);
if (ff == 0) {
// func_number is not in page list
#ifdef WITH_ROTARY_SWITCH
if (rotary.count >= 0) {
page_nr = (func_number + MODE_LAST -1); // page_nr = func_number - 2
} else {
page_nr = func_number; // for backward, set page_nr to func_number
}
if (page_nr > MODE_LAST) page_nr -= (MODE_LAST + 1);
#else
page_nr = func_number;
#endif
}
mm= 0;
do {
p_nr = page_nr + mm;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
lcd_set_cursor((mm+1)*PAGES_PER_LINE,0);
if (func_number == p_nr) {
lcd_data('>');
} else {
lcd_space(); // put a blank to 1. row of line 2
}
message2line(p_nr); // show page function
} while (++mm < MENU_LINES);
#else /* no PAGE_MODE */
uint8_t f_nr;
mm = 0;
do {
lcd_set_cursor((mm+1)*PAGES_PER_LINE,0);
if (mm == MENU_MIDDLE) {
lcd_data('>'); // put a '>' marker to row 1 of line 4
} else {
lcd_space(); // put a blank to 1. row of line 2
}
f_nr = func_number + MODE_LAST + 1 - MENU_MIDDLE + mm;
if (f_nr > MODE_LAST) f_nr -= (MODE_LAST +1);
message2line(f_nr); // show function for this line
} while (++mm < MENU_LINES);
#endif /* PAGE_MODE */
#else /* not LCD_LINES > 3 */
lcd_line2();
message2line(func_number);
#endif /* (LCD_LINES > 3) */
#ifdef POWER_OFF
ii = wait_for_key_ms(SHORT_WAIT_TIME); // wait about 5 seconds
if (ii > 0) ll = 0; // reset timer, operator present
if (DC_Pwr_mode == 1) ll = 0;
#else
ii = wait_for_key_ms(0); // wait endless
#endif
#ifdef WITH_ROTARY_SWITCH
if ((ii >= MIN_SELECT_TIME) || ((rotary_switch_present != 0) && (ii > 0)))
#else
if (ii >= MIN_SELECT_TIME)
#endif
{
// selection only with key-press
if (func_number == MODE_TRANS) break; // return to TransistorTester
if (func_number == MODE_FREQ) GetFrequency(0);
#if PROCESSOR_TYP == 644
if (func_number == MODE_HFREQ) GetFrequency(1); // measure high frequency with 16:1 divider
if (func_number == MODE_H_CRYSTAL) GetFrequency(5); // HF crystal input + 16:1 divider
if (func_number == MODE_L_CRYSTAL) GetFrequency(6); // LF crystal input, 1:1 divider
#endif
if (func_number == MODE_FGEN) {
make_frequency(); // make some sample frequencies
}
if (func_number == MODE_PWM) {
do_10bit_PWM(); // generate 10bit PWM
}
if (func_number == MODE_ESR) {
show_C_ESR(); // measure capacity and ESR at TP1 and TP3
}
if (func_number == MODE_RESIS) {
show_Resis13(); // measure resistor at TP1 and TP3
}
if (func_number == MODE_CAP13) {
lcd_clear();
show_Cap13(); // measure capacitor at TP1 and TP3
}
if (func_number == MODE_ROTARY) {
CheckRotaryEncoder(); // check rotary encoder
}
if (func_number == MODE_BIG_CAP_CORR) {
set_big_cap_corr();
}
#ifdef WITH_SELFTEST
if (func_number == MODE_SELFTEST) AutoCheck(0x11); // Full selftest with calibration
#endif
if (func_number == MODE_VEXT) show_vext();
#if ((LCD_ST_TYPE == 7565) || (LCD_ST_TYPE == 1306) || (LCD_ST_TYPE == 8812) || (LCD_ST_TYPE == 8814) || defined(LCD_DOGM))
if (func_number == MODE_CONTRAST) set_contrast();
#endif
if (func_number == MODE_SHOW) {
ShowData(); // Show Calibration Data
}
if (func_number == MODE_OFF) {
ON_PORT &= ~(1<<ON_PIN); //switch off power
wait_for_key_ms(0); //never ending loop
}
// don't increase function number for easier selection the same function
ii = 0; // function was executed before, do not increase func_number
#ifdef WITH_ROTARY_SWITCH
rotary.incre = 0; // reset all rotary information
rotary.count = 0;
#endif
message_key_released(SELECTION_str); //write Line 1 with Selection:
} /* end if (ii >= MIN_SELECT_TIME) */
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre >= FAST_ROTATION) break; // to much rotation
#ifdef POWER_OFF
if (rotary.count != 0) ll = 0; // someone is working, reset timer
#endif
if (rotary.count >= 0) {
func_number += rotary.count; // function number is increased by rotary steps
} else {
func_number += (MODE_LAST + 1 + rotary.count); // function is decreased by rotary steps
}
#endif
if (ii > 0) func_number++; // increase the function number with key press
} /* end for ll */
return;
} // end function_menu()
uint8_t function_menu() {
uint8_t ii;
uint8_t func_number;
#ifdef PAGE_MODE
uint8_t page_nr;
uint8_t p_nr;
uint8_t ff;
page_nr = MODE_LAST;
#ifdef WITH_ROTARY_SWITCH
rotary.count = 0;
#endif
#endif
func_number = 0;
message_key_released(SELECTION_str);
#ifdef POWER_OFF
uint8_t ll;
for (ll=0;ll<((MODE_LAST+1)*10);ll++)
#else
while (1) /* without end, if no power off specified */
#endif
{
if (func_number > MODE_LAST) func_number -= (MODE_LAST + 1);
#if (LCD_LINES > 3)
uint8_t mm;
#ifdef WITH_HARDWARE_SERIAL
uart_newline(); // start of new measurement
for (mm=0;mm<LCD_LINE_LENGTH;mm++) uart_putc('=');
message_key_released(SELECTION_str); //write Line 1 with Selection:
#endif
#ifdef PAGE_MODE
ff = 0;
mm = 0;
do {
p_nr = page_nr + mm;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
if (func_number == p_nr) ff = 1; // number is found
} while (++mm < MENU_LINES);
if (ff == 0) {
// func_number is not in page list
#ifdef WITH_ROTARY_SWITCH
if (rotary.count >= 0) {
page_nr = (func_number + MODE_LAST -1); // page_nr = func_number - 2
} else {
page_nr = func_number; // for backward, set page_nr to func_number
}
if (page_nr > MODE_LAST) page_nr -= (MODE_LAST + 1);
#else
page_nr = func_number;
#endif
}
mm= 0;
do {
p_nr = page_nr + mm;
if (p_nr > MODE_LAST) p_nr -= (MODE_LAST + 1);
lcd_set_cursor((mm+1)*PAGES_PER_LINE,0);
if (func_number == p_nr) {
lcd_data('>');
} else {
lcd_space(); // put a blank to 1. row of line 2
}
message2line(p_nr); // show page function
} while (++mm < MENU_LINES);
#else /* no PAGE_MODE */
uint8_t f_nr;
mm = 0;
do {
lcd_set_cursor((mm+1)*PAGES_PER_LINE,0);
if (mm == MENU_MIDDLE) {
lcd_data('>'); // put a '>' marker to row 1 of line 4
} else {
lcd_space(); // put a blank to 1. row of line 2
}
f_nr = func_number + MODE_LAST + 1 - MENU_MIDDLE + mm;
if (f_nr > MODE_LAST) f_nr -= (MODE_LAST +1);
message2line(f_nr); // show function for this line
} while (++mm < MENU_LINES);
#endif /* PAGE_MODE */
#else /* not LCD_LINES > 3 */
lcd_line2();
message2line(func_number);
#endif /* (LCD_LINES > 3) */
#ifdef POWER_OFF
ii = wait_for_key_ms(SHORT_WAIT_TIME); // wait about 5 seconds
if (ii > 0) ll = 0; // reset timer, operator present
if (DC_Pwr_mode == 1) ll = 0;
#else
ii = wait_for_key_ms(0); // wait endless
#endif
#ifdef WITH_ROTARY_SWITCH
if ((ii >= MIN_SELECT_TIME) || ((rotary_switch_present != 0) && (ii > 0)))
#else
if (ii >= MIN_SELECT_TIME)
#endif
{
// selection only with key-press
if (func_number == MODE_TRANS) return 0; // return to TransistorTester
do_menu(func_number);
// don't increase function number for easier selection the same function
ii = 0; // function was executed before, do not increase func_number
#ifdef WITH_ROTARY_SWITCH
rotary.incre = 0; // reset all rotary information
rotary.count = 0;
#endif
message_key_released(SELECTION_str); //write Line 1 with Selection:
} /* end if (ii >= MIN_SELECT_TIME) */
#ifdef WITH_ROTARY_SWITCH
if (rotary.incre >= FAST_ROTATION) break; // to much rotation
#ifdef POWER_OFF
if (rotary.count != 0) ll = 0; // someone is working, reset timer
#endif
if (rotary.count >= 0) {
func_number += rotary.count; // function number is increased by rotary steps
} else {
func_number += (MODE_LAST + 1 + rotary.count); // function is decreased by rotary steps
}
#endif
if (ii > 0) func_number++; // increase the function number with key press
} /* end for ll */
return 0;
} // end function_menu()
void GetFrequency(uint8_t range) {
unsigned char taste; // set if key is pressed during measurement
#if PROCESSOR_TYP == 644
unsigned long freq_count; // the counted pulses in 1 second
#endif
unsigned long long ext_period;
unsigned long freq_from_per;
uint8_t ii;
uint8_t mm;
/* range has set the lowest bit to use the 16:1 frequency divider permanently. */
/* The upper bits of range specifies the input selection. */
/* 0 = external input, 2 = channel 2, 4 = HF Quartz, 6 = LF Quartz */
#if PROCESSOR_TYP == 644
FDIV_DDR |= (1<<FDIV_PIN); //switch to output
if ((range & 0x01) == 0) {
FDIV_PORT &= ~(1<<FDIV_PIN); // switch off the 16:1 divider
} else {
FDIV_PORT |= (1<<FDIV_PIN); // use frequency divider for next measurement
}
FINP_DDR |= (1<<FINP_P0) | (1<<FINP_P1); // switch both pins to output
FINP_PORT &= ~(1<<FINP_P0); // clear lower bit of input selection
FINP_PORT &= ~(1<<FINP_P1); // clear higher bit of input selection
if (range == 0) {
message_key_released(FREQ_str); // Frequency: in line 1
} else if (range == 1) {
message_key_released(HFREQ_str); // High Frequency: in line 1
} else if (range < 4) { /* 2+3 */
FINP_PORT |= (1<<FINP_P0); // set lower bit of input selection
FINP_PORT &= ~(1<<FINP_P1); // clear higher bit of input selection
} else if (range < 6) { /* 4+5 */
FINP_PORT &= ~(1<<FINP_P0); // clear lower bit of input selection
FINP_PORT |= (1<<FINP_P1); // set higher bit of input selection
message_key_released(H_CRYSTAL_str); // HF Quarz: in line 1
} else { /* 6+7 */
FINP_PORT |= (1<<FINP_P0); // set lower bit of input selection
FINP_PORT |= (1<<FINP_P1); // set higher bit of input selection
message_key_released(L_CRYSTAL_str); // LF Quarz: in line 1
}
#else
message_key_released(FREQ_str); // Frequency: in line 1
#endif
taste = 0; // reset flag for key pressed
for (mm=0;mm<240;mm++) {
// *************************************************************************
// *********** straight frequency measurement by counting 1 second *********
// *************************************************************************
//set up Counter 0
// Counter 0 is used to count the external signal connected to T0 (PD4 or PB0)
FREQINP_DDR &= ~(1<<FREQINP_PIN); // switch frequency pin to input
wait1ms(); // let capacitor time to load to 2.4V input
#if PROCESSOR_TYP == 1280
TCCR3A = 0; // normal operation, no output
TCNT3 = 0; // set counter 3 to zero
ext_freq.dw = 0; // set external frequency to zero
TIFR3 = (1<<TOV3); // clear OV interrupt of timer 3
TIMSK3 = (1<<TOIE3); // enable OV interrupt of timer 3
#else
TCCR0A = 0; // normal operation, no output
TCNT0 = 0; // set counter to zero
ext_freq.dw = 0; // set external frequency to zero
TIFR0 = (1<<TOV0); // clear OV interrupt of timer 0
TIMSK0 = (1<<TOIE0); // enable OV interrupt of timer 0
#endif
// start counter after starting second counter timer 1
// set up counter 1 to measure one second
TCCR1A = 0; // normal operation
#define CNT1_END_VAL ((F_CPU / 256UL) + 1)
#define CNT1_DIVIDER (1<<CS12)
#if CNT1_END_VAL > 0xffff
#undef CNT1_END_VAL
#undef CNT1_DIVIDER
#define CNT1_END_VAL ((F_CPU / 1024UL) + 1)
#define CNT1_DIVIDER ((1<<CS12) | (1<<CS10))
#if F_CPU != ((F_CPU / 1024UL) * 1024UL)
#warning F_CPU can not be divided by 1024, measured frequency is wrong!
#endif
#else
#if F_CPU != ((F_CPU / 256UL) * 256UL)
#warning F_CPU can not be divided by 256, measured frequency is wrong!
#endif
#endif
OCR1B = CNT1_END_VAL; // set to 1 second (counter 0 is started with 1)
OCR1A = 1; // start counter 0 with first count
TCNT1 = 0; // set counter to zero
GTCCR |= (1<<PSRSYNC); // reset clock precounter
TIFR1 = (1<<OCF1B) | (1<<OCF1A); // clear Output compare match
TIMSK1 = (1<<OCIE1B) | (1<<OCIE1A); // enable the Compare A match and Compare B match interrupt
sei(); // set interrupt enable
TCCR1B = CNT1_DIVIDER; // divide CPU clock by 256, start counter
// both counter are running now, wait for counter 1 reach OCR1A
for (ii=0;ii<50;ii++) {
wait20ms(); // first count of counter 1 (<32us) has started the counter 0
wdt_reset();
if (!(RST_PIN_REG & (1<<RST_PIN))) taste = 1; // user request stop of operation
#if PROCESSOR_TYP == 1280
if (TCCR3B == 0) break; // timer 3 is stopped by interrupt
#else
if (TCCR0B == 0) break; // timer 0 is stopped by interrupt
#endif
}
// one second is counted
#if PROCESSOR_TYP == 1280
TCCR3B = 0; // stop timer 3, if not stopped by timer 1 compare interrupt
ext_freq.w[0] = TCNT3; // add lower 16 bit to get total counts
#else
TCCR0B = 0; // stop timer 0, if not stopped by timer 1 compare interrupt
ext_freq.b[0] = TCNT0; // add lower 8 bit to get total counts
#endif
#if PROCESSOR_TYP == 644
freq_count = ext_freq.dw; // save the frequency counter
#endif
#if (LCD_LINES > 3)
lcd_line3();
lcd_clear_line();
lcd_line4();
lcd_clear_line();
lcd_clear_line2();
#else
lcd_clear(); // clear total display
#endif
lcd_data('f');
lcd_equal(); // lcd_data('=');
#if PROCESSOR_TYP == 644
if ((FDIV_PORT&(1<<FDIV_PIN)) == 0) {
Display_Hz(ext_freq.dw, 7);
} else {
// frequency divider is activ
Display_Hz(ext_freq.dw*FREQ_DIV, 7);
}
#else
Display_Hz(ext_freq.dw, 7);
#endif
#if PROCESSOR_TYP == 644
lcd_space();
if ((FDIV_PORT&(1<<FDIV_PIN)) != 0) {
lcd_data('/'); // Frequency divider is activ
} else {
lcd_space(); // Frequency divider is not activ
}
#endif
FREQINP_DDR &= ~(1<<FREQINP_PIN); // switch frequency pin to input
if (TCCR1B != 0) {
// Exact 1000ms period is only with "end of period" from timer1 interrupt.
// When stopped with the for loop, the time is too long because wait call does not
// respect CPU time used for interrupts and loop itself.
// For this case show ? behind the Hz.
lcd_data('?');
}
TCCR1B = 0; // stop timer 1
TIMSK1 = 0; // disable all timer 1 interrupts
if ((ext_freq.dw < FMAX_PERIOD) && (ext_freq.dw > 0)) {
// *************************************************************************
// ******** Period measurement by counting some periods ********************
// *************************************************************************
pinchange_max = ((10 * (unsigned long)ext_freq.dw) + MHZ_CPU) / MHZ_CPU; // about 10000000 clock tics
pinchange_max += pinchange_max; // * 2 for up and down change
FREQINP_DDR &= ~(1<<FREQINP_PIN); // switch frequency pin to input
wait1ms(); // let capacitor time to load to 2.4V input
#if PROCESSOR_TYP == 1280
TCNT3 = 0; // set counter 3 to zero
ext_freq.dw = 0; // reset counter to zero
TIFR3 = (1<<TOV3); // clear OV interrupt
TIMSK3 = (1<<TOIE3); // enable OV interrupt
// counter 3 ist started with first pin change interrupt
pinchange_count = 0;
EICRB = (0<<ISC61) | (1<<ISC60); // set int6 pin change
EIFR |= (1<<INTF6); // clear interrupt 6 flag
PCMSK_FREQ |= (1<<PCINT_FREQ); // enable int6
#else
TCNT0 = 0; // set counter 0 to zero
ext_freq.dw = 0; // reset counter to zero
TIFR0 = (1<<TOV0); // clear OV interrupt
TIMSK0 = (1<<TOIE0); // enable OV interrupt
// counter 0 ist started with first pin change interrupt
pinchange_count = 0;
PCIFR = (1<<PCI_CLEAR_BIT); // clear Pin Change Status
PCICR |= (1<<PCI_ENABLE_BIT); // enable pin change interrupt
#endif
sei();
PCMSK_FREQ |= (1<<PCINT_FREQ); // monitor PD4 PCINT20 or PB0 PCINT8 pin change
for (ii=0;ii<250;ii++) {
wait20ms();
wdt_reset();
if (!(RST_PIN_REG & (1<<RST_PIN))) taste = 1; // user request stop of operation
if ((PCMSK_FREQ & (1<<PCINT_FREQ)) == 0) break; // monitoring is disabled by interrupt
} /* end for ii */
#if PROCESSOR_TYP == 1280
TCCR3B = 0; // stop counter 3
PCMSK_FREQ &= ~(1<<PCINT_FREQ); // disable int6
ext_freq.w[0] = TCNT3; // add lower 16 bit to get total counts
#else
TCCR0B = 0; // stop counter 0
PCMSK_FREQ &= ~(1<<PCINT_FREQ); // stop monitor PD4 PCINT20 or PB0 PCINT8 pin change
PCICR &= ~(1<<PCI_ENABLE_BIT); // disable the interrupt
ext_freq.b[0] = TCNT0; // add lower 8 bit to get total counts
#endif
// lcd_clear_line2();
// wait50ms(); // let LCD flicker to
#if (LCD_LINES > 3)
lcd_line3(); // use line3 to report the period with 4-line LCD
#else
lcd_line2(); // report period on line 2 of 2-line LCD
#endif
lcd_data('T');
lcd_equal(); // lcd_data('=');
ext_period = ((unsigned long long)ext_freq.dw * (200000/MHZ_CPU)) / pinchange_max;
#if PROCESSOR_TYP == 644
if ((FDIV_PORT&(1<<FDIV_PIN)) != 0) {
// frequency divider is activ, period is measured too long
ext_period = ext_period / FREQ_DIV;
}
#endif
if (pinchange_max > 127) {
DisplayValue(ext_period,-11,'s',7); // show period converted to 0.01ns units
} else {
//prevent overflow of 32-Bit
DisplayValue((unsigned long)(ext_period/100),-9,'s',7); // show period converted to 1ns units
}
if (ii == 250) {
lcd_data('?'); // wait loop has regular finished
} else {
if (ext_period > 249500) {
#if (LCD_LINES > 3)
lcd_line4(); // use line 4 of 4-line LCD to report the computed frequency
#else
lcd_line1(); // overwrite line 1 of 2-line LCD to report the computed frequency
#endif
lcd_data('f');
lcd_equal(); // lcd_data('=');
if (ext_period > 1000000000) {
// frequency in 0.000001Hz (1e11*1e6)/(0.01ns count)
freq_from_per = (unsigned long long)(100000000000000000) / ext_period;
DisplayValue(freq_from_per,-6,'H',7); // display with 0.000001 Hz resolution
} else {
// prevent unsigned long overflow, scale to 0.0001 Hz
// frequency in 0.0001Hz (1e11*1e4)/(0.01ns count)
freq_from_per = (unsigned long long)(1000000000000000) / ext_period;
DisplayValue(freq_from_per,-4,'H',7); // display with 0.0001 Hz resolution
}
lcd_data('z');
FREQINP_DDR &= ~(1<<FREQINP_PIN); // switch frequency pin to input
}
}
} /* end if 1 < ext_freq < FMAX_PERIOD */
#if PROCESSOR_TYP == 644
if ((FDIV_PORT & (1<<FDIV_PIN)) == 0) {
// frequency divider is not activ
if ( ((freq_count >= FMAX_PERIOD) && (freq_count < ((unsigned long)FMAX_PERIOD*FREQ_DIV))) ||
(freq_count > FMAX_INPUT) ){
FDIV_PORT |= (1<<FDIV_PIN); // use frequency divider for next measurement
}
} else {
// frequency divider is activ
if ((freq_count < (FMAX_PERIOD/FREQ_DIV)) && ((range & 0x01) == 0)) {
FDIV_PORT &= ~(1<<FDIV_PIN); // switch off the 16:1 divider
}
}
#endif
// taste += wait_for_key_ms(SHORT_WAIT_TIME/2);
TIMSK0 = 0; // disable all timer 0 interrupts
taste += wait_for_key_ms(2000);
#ifdef WITH_ROTARY_SWITCH
if ((taste != 0) || (rotary.incre > 2)) break;
#else
if (taste != 0) break;
#endif
} /* end for mm */
return;
} // end GetFrequency()